Lochinvar EcoShield SHW116-410CE, Installation, Commissioning & Maintenance Instructions

Page: 64 / 72

64
THE PROCEDURE FOR A DAILY PASTEURISATION WHEN SUPPLYING DOMESTIC HOT WATER AT LESS THAN
60
O
C:
Systems must always comply with the requirements of L8, running the water heaters at low
temperatures may encourage the growth of legionella bacteria.

Access the installer menu (Down & Enter for 5 seconds).

Set parameter p02 to temperature required less than standard pasteurisation setting of 65
o
C (if the daily set point is to be 50
o
C for
example then this would be set at 15
o
C).

Set parameter p03 to 65°C (this is the pasteurisation setting).

Exit the installer menu.

Access the user menu (Enter for 5 seconds)

Set parameter u02 to 75°C (this is the pasteurisation temperature)

Check that parameters u03 to u07 give the correct date and time.

Exit the user menu.

Access the setback function menu (Up & Down for 5 seconds).

Set the trigger values as follows:
Trigger Day Time
On 1 1 23:59
Off 1 1 00:59
On 2 2 23:59
Off 2 2 00:59
On 3 3 23:59
Off 3 3 00:59
On 4 4 23:59
Off 4 4 00:59
On 5 5 23:59
Off 5 5 00:59
On 6 6 23:59
Off 6 6 00:59
On 7 7 23:59
Off 7 7 00:59

Exit the setback function menu (Enter for 5 seconds)
This will cause the water heater to operate at the reduced temperature between 00:59 and 23:59 each day with the exception of the period from
23:59 until 00:59 when the set point will be 65°C
During the pasteurisation period, any outlets without temperature limiting devices fitted will have
very hot water, suitable precautions should be taken to inform all potential users.